| Forest Grove to Cibolo (Texas) | 1,741.30 mi (2,802.36 km) |
| Forest Grove to Cicero (Illinois) | 1,769.90 mi (2,848.38 km) |
| Forest Grove to Cimarron Hills (Colorado) | 1,045.61 mi (1,682.75 km) |
| Forest Grove to Cincinnati (Ohio) | 2,000.10 mi (3,218.85 km) |
| Forest Grove to Cinco Ranch (Texas) | 1,836.65 mi (2,955.80 km) |
| Forest Grove to Circleville (Ohio) | 2,062.55 mi (3,319.35 km) |
| Forest Grove to Citrus (California) | 835.02 mi (1,343.84 km) |
| Forest Grove to Citrus Heights (California) | 480.99 mi (774.07 km) |
| Forest Grove to Citrus Park (Florida) | 2,510.74 mi (4,040.65 km) |
| Forest Grove to Claiborne (Louisiana) | 1,869.67 mi (3,008.94 km) |
| Forest Grove to Claremont (California) | 837.45 mi (1,347.74 km) |
| Forest Grove to Claremont (New Hampshire) | 2,466.47 mi (3,969.39 km) |
| Forest Grove to Claremore (Oklahoma) | 1,560.36 mi (2,511.15 km) |
| Forest Grove to Clarksburg (Maryland) | 2,347.29 mi (3,777.60 km) |
| Forest Grove to Clarksburg (West Virginia) | 2,198.04 mi (3,537.40 km) |
